In perhaps its most common usage, 'fall line' refers to the natural line of descent on a slope.

For Tim and Nancy, both avid skiers since early childhood, 'fall line' evokes the image of a perfectly balanced skier, gracefully descending a slope of deep, fluffy powder—leaving behind a beautifully carved swoosh.

It's what they aspire to on the slopes...and what they instill in their wines: Balance. Grace. Depth.